Question

A)5x+10=20 б)3+0.5x=6 в)2x-7=17 г) 3-1/3x=2

Answer 1

А)5х+10=20
5х=20-10
5х=10
х=10÷5
х=2.
б)3+0.5х=6
0.5х=6-3
0.5х=3
х=3÷0.5
х=6.
в)2х-7=17
2х=17+7
2х=24
х=24÷2
х=12.
г)3-1/3х=2
-1/3х=2-3
-1/3х=-1
х=-1÷(-1/3)
х=3.

Answer 2

Let's solve each of the equations step by step:

A) 5x + 10 = 20

Step 1: Subtract 10 from both sides to isolate the variable term. 5x = 20 - 10 5x = 10

Step 2: Divide both sides by 5 to solve for x. x = 10 / 5 x = 2

So the solution to the equation A) is x = 2.

B) 3 + 0.5x = 6

Step 1: Subtract 3 from both sides to isolate the variable term. 0.5x = 6 - 3 0.5x = 3

Step 2: Divide both sides by 0.5 to solve for x. x = 3 / 0.5 x = 6

So the solution to the equation B) is x = 6.

C) 2x - 7 = 17

Step 1: Add 7 to both sides to isolate the variable term. 2x = 17 + 7 2x = 24

Step 2: Divide both sides by 2 to solve for x. x = 24 / 2 x = 12

So the solution to the equation C) is x = 12.

D) 3 - (1/3)x = 2

Step 1: Add (1/3)x to both sides to isolate the constant term. (1/3)x = 3 - 2 (1/3)x = 1

Step 2: To solve for x, multiply both sides by 3 to get rid of the fraction. x = 1 * 3 x = 3

So the solution to the equation D) is x = 3.

Summary of solutions: A) x = 2 B) x = 6 C) x = 12 D) x = 3